Siemens to sell its hearing aid unit to the European private-equity firm EQT Partners for about $2.69 billion. Read the full story

Laboratory Corporation of America acquired Covance for $6.1 billion. Read the full story

In today's m&a news, Optum buys Alere Health from Alere for $600 million.  Read the full story

Abbott has entered into an acquisition agreement to purchase Topera. Read the full story

Wright Medical Group and Tornier have entered into a acquired agreement under which Wright and Tornier will combine in an all stock transaction with a combined equity value of approximately $3.3 billion. Read the full story

Bristol-Myers Squibb has entered a deal with F-star Alpha that gives it the option for acquisition and gain rights to its lead asset, FS201. Read the full story

In response to recent changes to the U.S. tax code to discourage so-called tax inversion deals, Chicago-based AbbVie recently indicated it was rethinking its $54 billion takeover bid of U.K.-based Shire. Read the full story

MorphoSys and Lanthio Pharma acquires of Lanthio Pharma's lanthipeptide technology, which will be used for drug discovery by MorphoSys. Read the full story

Roche has acquired from Wilex the rights to an undisclosed cancer drug for as much as $65.8 million. Read the full story

Steris has agreed to acquire Synergy Health for $1.9 billion in an all cash and stock exchange. Read the full story